Sole-laying machine



(No Modell) W. S. HAMM.

' SOLE LAYING MACHINE. 1 I 0. 375,549. Patented Dec. 27,1887

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UNITED STATES PATENT OFFICE.

WILLIAM S, HAMM, OF NEWTON, ASSIGNOR TO THE BOOT AND SHOE SOLE LAYING COMPANY, OF BOSTON, MASSACHUSETTS.

SOLE-LAYING MACHINE.

SPECIFICATION forming part of Letters Patent No. 375,549, dated December 27, 1887. Application filed April 28, I887. Serial No. 286,396. (No model.)

To all whom it may concern;

Be it known that I, WILLIAM S. HAMM, of Newton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Oross-Head Locking Devices for SoleLaying Machines, of which the following is a specification.

This invention relates to machines for pressing cement-coated soles against lasted uppers of boots and shoes and holding such soles while thecement is hardening, the last holding the upper being secured to a jack that is supported by a vertically-movable cross-head. Said cross-head is adapted to slide on vertical guide-rods and is supported by springs on said rods. Foot power mechanism is provided whereby the operator may depress the crosshead and jack against the pressure of the springs, the latter tending to raise the crosshead to its highest point when the holdingdown pressure ceases.

The object of my invention is to provide improved means whereby the cross-head may. be automatically locked to the guide-rods in any position to which it may have been moved; and to this end it consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this. specification, Figure 1 represents a side elevation of the upper portion ofa solelaying machine having my improvements. Fig. 2 represents a section on line mm, Fig. 1. Fig. 3 represents a section on line y y, Fig.2. Fig. 4 represents a perspective view of one of the clamps which lock the cross-head.

The same letters of reference indicate the same parts in all the figures.

In the drawings, a a represent the fixed uprights or guide-standards, and 1) represents the 40 jack-supporting cross-head fitted to slide on said standards and has hearings on the upper ends of spiral springs c c on said standards, the lower ends of said springs bearing on fixed supports at the lower ends of said standards.

The cross-head b is provided with standards to support thetoe and heel portions of a last, as usual inthis class of machines. In Fig. 1 I show a portion, d, of one of said standards; but as the construction of the jack and of all parts of the machine, excepting the devices Company, assignees of O. E. Holland, dated May 3, 1887, No. 362,447, the same showing the uprights a a, a supporting-frame therefor, ajack-supporting cross-head movable vertically on said uprights and provided with toe and heel supporting standards, springs on the 6 uprights a a to support the cross-head, a treadle, and rods e 0, connecting said treadle with the cross-head,so that the operator may, by pressing downwardly on said treadle, de-

press the cross-head and its last against the supporting pressure'of the springs c c. Said patent also shows the sole pressing and molding bed and mechanism for raising and depressing the same.

In carrying out my invention I provide 001- lars h h, adapted to slide on the standards or guide-rods a a above the cross-head b. To said collars are rigidly attached downwardlyprojecting armsi t, having slots j j in their lower portions,which receive studs 1: k on the cross-head b. The slots j j are enough longer than the diameter of the studs to enable the collars to have a slight vertical movement independent ofthe cross-head, and the object of the studs and slotted arms is mainly to pre- 8 5 'vent the collars h h from turning on the guide rods. In said collars are formed sockets, each containing a tubular clamp, m. Said clamps surround and fit closely upon the uprights or guide-rods a. a, and each is a tube split along one side and provided with ribs 2 2 along the sides of the cleft. The outer sides of said ribs are oppositely beveled and fit the correspondingly-beveled sides 3 3 of a groove, 4, formed in a block, n,which is loosely fitted in a recess 5 l in the collar h, said recess communicating with the socket which holds the accompanying tubular split clamp m. A cam-lever, 0, is pivoted in a recess in the collar h and bears against the outer side of the block a. Said lever is bent downwardly and has a beveled lower end, (i,which bears on a beveled face,7, formed on the cross-head b. The upward pressure of the beveled faces 7 against the beveled ends of the cam-levers 0, caused by the cross-head supporting-springs c c, presses the cam portions 8 of said levers against the blocks a n, and causes the beveled sides of the grooves 4c in said blocks to press the beveled ribs 2 2 of the split clamps m toward each other, and thus compress said clamps upon the guide-rods a at until the clamps are firmly locked thereon and prevent the cross-head from moving vertically. It will be seen, therefore, that whenever the cross-head is depressed by the treadle above referred to, to which the cross-head is connected by the rodsc e, the collars h it will be caused by gravitation to follow the cross-head, and that whenever the depressing pressure ceases the tendency of the springs c c to force the cross-head upwardly causes the beveled faces 7 to act on the cam-levers o and the latter to act on the blocks n and cause them to compress the clampsm,and thus lock the crosshead at any point to which it may have been moved on the standards a a, the locking immediately following the release of the depressing-treadle.

To enable the operator to release the crosshead and permit it to be raised to its full height by the springs c c, I provide the crosshead with a rock-shaft, 1-, journaled in ears on theerosshead and provided with a knob or handle, 1*, and with cams s 8, adapted to bear against the rods 71 1; of the collars h h, and raise the said collars sufficiently to relieve the camlevers from the pressure exerted on them by the inclined faces 7, and thus release the clamps m and allow the collars h h to slide upwardly to the stops at the upper ends of the guiderods. The rock-shalt r is normally held by a spring, 8, so that its cams are out of contact with the arms 2', as shown in Fig. 2.

The clamps in being formed as described, the grooved blocks n are caused to compress the clamps, and the cam levers, whereby said blocks are pressed against the clamps, may be operated by other suitable means than those described. For example, the cam-leverso may be attached to a rock-shaft corresponding to the screw-shaft Z in the said Holland patent, said shaft being operated by automatic mechanism substantially like that shown for operating the screw-shaft Z in said patent.

t t represent buffers of yielding rubber placed under and in contact with collars u u, affixed to the gnide-rods a a,to arrcstthe crosshead at the end of its upward movement with out jar.

It will be seen that by my improvements wear and friction of the devices used to lock the cross-head are reduced to the minimum.

I claim 1. The eombinatiomwith the guide-rods a a, of the split'clamps adapted to slide on said rods, socketed holders for said clamps, the grooved blocks adapted to compress said clamps,and devices,substantially as described, for pressing said blocks against the clamps.

2. The combination, with the cross-head b, guide-rods a a, and springs c c, of the collars h h, adapted to slide on the guide-rods, the tubular clamps in said collars, and devices, substantially as described,intermediate of said cross-head and collars, whereby when the cross-head is free to be raised by the springs c c the pressure of said springs tightens the clamps on the guide-rods and locks the cross head, as set forth.

3. The combinution, with the crosshead b, guide-rods a a, and springs c c, of the collars h h, adapted to slide on the guide-rods, the tubular clamps m in said collars, the loose blocks n,adapted to compress the clamps when pressed against them, and theeam-levers 0 and inclines 7, through which the springs c c act to compress the clamps m, as set forth.

4. The combination of the cross-head having the rock-shaft r and cams s, the supporting-springs, the guide-rods, the collars h h, having the tubular clamps, the blocks 11, the cam-levers o, the inclines 7 on the cross-head, and the arms 2' on said collars, arranged to be raised with the collars by the cams s, substantially as and for the purpose specified.

In testimony whereof Ihavesigned my name to this specification,in the presence of tw subscribing witncsses,this 21st day of April,1887.

VILLIAM S. HAMM.

Witnesses:

O. F. Bnown, A. D. HARRISON. 

